Siamese cable refers to multiple cables being joined with a web joining the jackets integrally. There are siamese cables that are multiple count of the same type of cable or different. In Video Applications utilizing RG59, the siamese configuration is understood to include cable/wire for bringing power to the Camera and is sized/rated accordingly. The most common application uses 18 gauge, 2 conductors of wire (red and black) and has a comparable limit of length of use to the Coaxial Video Cable.